α farnesene

α-Farnesene, a sesquiterpene, is a herbivore-induced plant volatile (HIPV) that plays a significant role in insect resistance across various plant species.

(E)-β-Farnesene (trans-β-Farnesene) is a sesquiterpene hydrocarbon found in Phlomis aurea Decne, serving as the primary component of many aphid alarm pheromones that disrupt feeding. It also impairs the development and survival of Chilo suppressalis larvae by disrupting their hormone balance.